Half to thompson



(No Model.)

P. T. COUCH.

ROLLER MILL ADJUSTMENT.

No. 417,409. Patented Dec. 17, 1889..

Ji K 7 UNITED STATES PATENT OFFICE.

PERLEY T. COUCH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO THOMPSON & CAMPBELL, OF SAME PLACE.

ROLLER-MILLADJUSTMENT.

SPECIFICATION forming part of Letters Patent No. 417,409, dated December 17, 1889.

' Application filed July 30, 1887. Serial No. 245,767. (No model.)

To aZZ whom it may concern.-

Be it known that I, PERLEY T. COUCH, of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Roller-Mill,Adjustments, of

which the following is a specification.

My invention relates to roller-mills for the reduction of grain and other substances; and it consists in certain combinations of devices to hereinafter claimed for adjusting the-front or movable roll relatively to the stationary roll.

In the accompanying drawings, which show so much of a roller-mill as is necessary for illustration-of my improvements, Figure 1 is a View in side elevation; Fig. 2, a view in front elevation; and Fig. 3 is a sectional plan of parts on the line 3 3 of Fig. 2.

A is the base or main frame supporting the stationary roll 0 and. the horizontally-movable roll D, which are mounted in suitable bearings. The movable-roll bearings are carried by sliding frames or pillow-blocks E, whereby the roll is adapted to be moved toward or away from the stationaryvroll O, in order to adjust 2 5 the relative positions of the rolls for a purpose well known. Horizontal rods M M are secured each atits inner end to the pillow-blocks E, respectively, at opposite ends of the movable roll, and these rods have their bearings in lugs 13 of the main frame. Coiled springs N surround these rods, and each bears at one end upon one of the lugs B and at the opposite end upon a plate or collar Y, loosely fitted upon said rods, the springs acting with a tendency 3 5 to force the movable roll toward the fixed roll 0. The collars Yare adjusted upon the rods by means of clamp-nuts O, in order to regulate the tension of the springs N. The outer ends of the rods are threaded to receive adjusting hand-wheels K, each of which bears upon a washer or collar J, interposed between it and v a rocking sleeve I on the rod next the bearing-lug B. Each of these sleeves is formed with or rigidly attached to the upper end of a lever I, and the sleeves have at their inner ends clutch-like inclines or cam-faces which bear against similar cam-faces on short sleeves of the lugs B.

It will be seen that by turning the handwheels K K in either direction the movable roll may be adjusted or set independently at either end, so as to occupy its normal position relatively to the fixed roll. The cam-faces are provided in order to adjust both ends of the movable roll simultaneously by means of connecting mechanism, as next to be described.

The vibrating levers I are pivotally connected at their lower ends to nuts R, working upon the opposite threaded ends of a rotating adj usting-rod Q. Said rod, therefore, has its bearings in the vibrating levers I and is normally prevented from endwise movement by an end thereof bearing upon an extension or bracket F of the main frame, against which it is held by means of the springs N, acting through the cam-faces upon the vibrating levers I.

By rotating the adj Listing-rod Q in one-direotion by means of the hand-wheel P, rigidly secured thereon, the nuts R R, and hence the lower ends of the vibrating levers I I, are caused to move simultaneously in the same direction, the rod Q being prevented from endwise movement, as above explained, and the cam-faced lever-sleeves I are slightly turned on the rods M M, their inclined faces riding against the inclined faces of the lugs B, whereby said sleeves and the endwise-movable rods M are moved against the stress of the springs N and the movable roll D moved away from the fixed roll 0 any distance desired. The reverse movement of the handwheel P and adj usting-rod Q of course reverses the above-described movement of the roll D and causes itto approach nearer the roll O. During this reverse movement and adjustment of the nuts R along the adjusting-rod the springs N prevent endwise movement of the adjusting-rod away from its end bearing F, the springs acting through the mego dium of the levers I and connections thereof,

as will readily be understood.

A vibrating hand-lever H is rigidly secured at its lower end to a horizontal rock-shaft G, and is operated to quickly throw the movable 9 5 roll D into and out of operation by moving said roll to its farthest limit away from or close to the fixed roll 0 in the following manner: A rockingarm or lever T is rigidly secured at one end to the rock-shaft G, and at 10o its opposite end has sliding connection with a link S, a pin on said rocking lever engaging a slot in the outer end of the link. This link is pivotally connected at its inner end to one of the nuts R on the adj usting-rod Q. Vthen the lever H is in its normal position,as shown in the drawings, the roll D is in an operative position; but when said lever is rocked inward the adjusting-rod Q, through the instrumentality of the rock-shaft G, lever T, and link S, is moved endwise, whereby the levers I I are simultaneously rocked to throw the movable roll to its farthest position away from the fixed roll, or out of operation. The hand-lever is provided with a spring-actuated detent, which engages with an arm or lug V, proj eating from the main frame, to lock the lever in the position it occupies when its upper end is at the point X X and the movable roll is out of operation.

I claim as my invention 1. The combination of the main frame, the pair of rolls, one of which is adjustable relatively to the other, the endwise-movable rods connected with the movable pillow-blocks of the adjustable roll, the guide lugs or bearings for said rods, the springs acting with a tendency to force the adjustable roll toward the other roll, the fixed and rocking earn-faced sleeves, the levers rigid with said rocking sleeves, the threaded and turning adjustingroll, the fixed and rocking cam-faced sleeves, v

the levers rigid with said rocking sleeves, the adj Listing-rod, to which are jointed the levers of the cam-faced rocking sleeves, the handlever, its detent devices, the rock-shaft to which the hand-lever is attached, the arm on said rock-shaft, and the link jointed at one end on the adj HStlIIg-IOd and having the sliding or pin-and-slot connection at its opposite end with the rock-shaft arm, substantially as and for the purpose set forth.

PERLEY T. COUCII.

\Vitnesses:

PHILIPPUS W. MILLER, GEO. G. CooKMAN. 

